package com.leeon.container.iterator;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;

public class ReversibleArrayList<T> extends ArrayList<T> {

    public ReversibleArrayList(Collection<T> c){
        super(c);
    }

    public Iterable<T> reversed(){
        return new Iterable<T>() {
            @Override
            public Iterator<T> iterator() {
                return new Iterator<T>() {

                    int current = size() - 1;

                    @Override
                    public boolean hasNext() {
                        return current > -1;
                    }

                    @Override
                    public T next() {
                        return get(current--);
                    }
                    @Override
                    public void remove(){}
                };
            }
        };
    }

    public static void main(String[] args){
        ReversibleArrayList<String> ral = new ReversibleArrayList<String>(
                Arrays.asList(("To be or not to be").split(" ")));
        for (String s: ral){
            System.out.print(s + " ");
        }
        System.out.println();
        for (String s: ral.reversed()) {
            System.out.print(s + " ");
        }
    }
}
